A Better Way to protect your deck stair stringers from cracks and rot
Have you ever disassembled an old set of deck stairs? Did you notice all of the cracks in the stringers? No surprise there — all of the notches cut for stair treads create many feet of open wood grain that soaks up water, leading to cracks and rot that weaken the stringer.
You can protect your new stairs by simply applying a generous coat of DAP 230 to all of the notched surfaces, before you install the treads. This will seal the surface of the open wood grain, protecting the stringer from water, cracks and rot.